I agree with the others AJ, what you've done so far looks really good and I'd encourage you to keep practising on duplicates mate until you're confident enough to do it to something like DOTM Voyager Megs.

I feel the same way about painting or modifying figures I've only got one of , I learnt the hard way with a TM2 Cheetor I painted to make him a little more screen accurate, the figure's sans Cheetah spots normally? ), but didn't seal it or anything and the paint flaked/rubbed off and then he fell from my shelf and the chrome was badly chipped and... yeah - You can see what I'm getting at.